Chris Brown and Frank Ocean ended up coming to blows on Sunday night over a car parking space, according to reports.

Police were called to the incident at Westlake Recording studio in LA, which allegedly left Ocean nursing an injured hand.

"Got jumped by Chris and a couple of guys. lol," Ocean tweeted, adding: "Cut my hand now I can't play with two hands at the grammys."

However, insiders close to Brown insist that it was Ocean who started the brawl after the Channel Orange star blocked him in the car park. According to TMZ sources, Ocean said: "This is my studio, this is my parking spot." It is alleged that "one of Frank's people" then attacked Brown when he went to shake hands with Ocean.

This is not the first time the two singers have fallen out. Earlier this year Brown was accused of aiming a homophobic slur towards Ocean, who came out last year. Brown denied this, posting on Twitter: "My Opinion on the whole Frank Ocean subject is ......... Love who u wanna love. It's ur decision. People stop searching for BS."